SMD Alloy Resistor JIERR JER2512F3R040 with 3W Power Rating and Precise Current Sensing Capabilities
Product Overview
The Alloy Resistor PATCH RESISTOR is a high-power current sense resistor designed for precise current detection. It features SMD surface mounting, high power handling capabilities up to 3W, and ultra-low resistance values (down to 0.0R). This resistor is ideal for applications requiring accurate current monitoring in automotive electronics, power supplies, battery chargers, and consumer electronics.
Product Attributes
- Type: Alloy Resistor, PATCH RESISTOR
- Certifications: RoHS, REACH, AEC-Q200
Technical Specifications
| Type | Size | Rated Power (W) | Resistance Range (m) | Tolerance | TCR (ppm/) | Insulation Resistance (> M) | Max Working Temp () |
| 1206 | 1206 | 1 | 1~100 | F:1% | 1m: 350; 2m~100m: 50 | >100 | +170 |
| 1206 | 1206 | 0.5 | 110~200 | F:1% | 50 | >100 | +170 |
| 2512 | 2512 | 2 | 0.5~500 | F:1% | 1m~4m: 50; 0.5m~500m: 50 | >100 | +170 |
| 2512 | 2512 | 3 | 0.5~500 | F:1% | 0.5m~1m: 350; 2m~500m: 50 | >100 | +170 |
| 0805 | 0805 | 0.25 | 1~20 | F:1% | 350; 50 | >100 | +170 |
| 0805 | 0805 | 0.5 | 1~20 | F:1% | 50 | >100 | +170 |
| 0805 | 0805 | 1 | >100 | F:1% | 350 | >100 | +170 |
Product Features
- High power rating up to 3 watts.
- Ultra-low resistance values.
- Excellent temperature coefficient characteristics.
- Compliant with AEC-Q200 provisions.
- Passed RoHS REACH certification.
Applications
- Automotive electronics
- Current sensor, Power supplies
- Battery chargers
- Mobile phones, Computers, Consumer electronics
Part Numbering Example
JER1206F1R500(L) = JER Series, 1206 Size, 1W, 1% Tolerance, 500m Resistance
Dimensions
| Type | Length L (mm) | Width W (mm) | Thickness T (mm) | Electrode Width E (mm) |
| 1206 | 3.200.20 | 1.600.20 | 0.600.20 | 0.500.20 |
| 2512 | 6.400.20 | 3.200.20 | 0.800.20 | Large electrode: 2.200.20, Small electrode: 0.900.20 |
| 0805 | 2.000.20 | 1.250.20 | 0.600.20 | 0.400.20 |
Operating Temperature Range
-55 to +170. When operating in ambient temperatures above 70, the maximum load power should be derated according to the power derating curve.
Rated Current Calculation
I = P/R (I: Rated current (A), P: Rated Power (W), R: Resistance (ohm)). If the calculated current exceeds the maximum working current for the type, the maximum working current is the rated current.
Tapping Specification
| Size | Reel Diameter A (mm) | Core Diameter B (mm) | Reel Width C (mm) | Sprocket Hole Diameter F (mm) | Width W (mm) | Qty/Reel |
| 1206 | 1782.00 | 60.001.00 | 13.500.50 | 11.400.10 | 9.000.30 | 5000 |
| 2512 | 1782.00 | 60.001.00 | 13.500.50 | 15.401.00 | 13.000.30 | 4000 |
| 0805 | 1782.00 | 60.001.00 | 13.500.50 | 11.400.10 | 9.000.30 | 5000 |
Packing Specification
| Type | Packing | A (mm) | B (mm) | W (mm) | F (mm) | E (mm) | P0 (mm) | P1 (mm) | P2 (mm) | D (mm) | T (mm) |
| 0805 | Paper | 1.650.20 | 2.400.20 | 8.000.10 | 3.500.05 | - | 4.000.1 | 4.000.10 | 2.000.05 | 1.500.10 | 0.840.1 |
| 1206 | Paper | 2.000.15 | 3.600.20 | 8.000.10 | 3.500.05 | - | 4.000.10 | 4.000.10 | 2.000.05 | 1.500.10 | 0.840.1 |
| 2512 | Emboss | 3.600.2 | 6.900.2 | 12.00.2 | 5.50.05 | 1.750.1 | 4.000.1 | 4.000.1 | 2.00.05 | 1.50.10 | 1.00.15 |
Peel Force of Top Cover Tape
Paper carrier tape: 0.1N to 0.7N (10g to 70g). Plastic carrier tape: 0.3N to 1N (30g to 100g). Peel speed: 300 mm/min at 165-180 degree angle.
Recommended Board Dimensions
| Size | Resistance Range | a (mm) | b (mm) | L (mm) |
| 1206 | 1m~200m | 1.8 | 1.7 | 1.6 |
| 2512 | 0.5m~4m (Large electrode) | 4.0 | 3.1 | 1.8 |
| 2512 | 1m~500m | 4.0 | 2.1 | 4.1 |
| 0805 | 1m~20m | 1.4 | 1.2 | 1.4 |
Soldering Recommendations
Recommended Solder Paste: 96.5Sn/3.0Ag/0.5Cu
Performance Reliability Test Methods
| Item | Test Method | Condition | Specification |
| Short Time Overload | IEC60115-1 4.13 | Applied 5.0 times rated power for 5s. | R% 1% |
| Temperature Coefficient | IEC60115-1 4.8 | Measurement at room temp, +125 or +155. | Refer to Spec. |
| Temperature Cycling | JESD22 Method JA-104 | 1000 Cycles (-55 to +125). | R% |
| High Temperature Exposure | MIL-STD-202 Method 108 | 1000 hrs @ 125. | R% |
| Low Temperature Operation | IEC60115-1 4.23.4 | 45 min @ -55. | R% |
| Biased Humidity | MIL-STD-202 METHOD 103 | 1000 hours 85/85%RH, 10% rated power. | R% 1% |
| Solderability | J-STD-002B test B | Dip in flux, then solder bath at 245 5 for 2~3sec. | Min 95% coverage |
| Operational Life | MIL-STD-202 METHOD 108 | 702, rated current 1.5h on, 0.5h off, 1000 +48/-0 hours. | R% 1% |
| Resistance to Vibration | MIL-STD-202 METHOD 204 | 5g's for 20min, 12 cycles, 10-2000Hz. | R% 1% |
| Resistance to Solder Heat | IEC60115-1 4.18 | Dip in flux, then solder bath at 260 5 for 101sec. | R% 1%, No visible damage |
| Terminal Bending | AEC-Q200-005 | Min 2mm deflection, 60sec. | R% 1% |
| Mechanical Shock | MIL-STD-202 METHOD 213 | 100g's, 6ms, half sine shock pulse. | R% 1% |
| Terminal Strength | AEC-Q200-006 | Applied 17.7N (1.8Kg) for 601 seconds. | R% 1% |
| Thermal Shock | MIL-STD-202 METHOD 107 | -55/+125, 300 cycles, 15 min dwell time. | R% 1% |
| Flammability | UL-94 | V-0 or V-1 acceptable. | - |
| ESD Test | AEC-Q200-002 | 2KV, 2 times/1s. | R% 1% |
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.